Lymph nodes throughout the body may become swollen due to illness. Discover the symptoms, learn about diagnosis, and get tips on prevention.

Your lymph nodes, along with your spleen, tonsils, and adenoids, help you fight off illness and infections. Learn more about your lymph nodes’ part in this first line of defense.

Allergies can sometimes cause swollen lymph nodes along with other allergy symptoms. They can become large and painful and lead to a sinus infection if left untreated.

Swollen lymph nodes can be a monkeypox (mpox) symptom, but other infections can cause this symptom. Learn what to do if a person has mpox.

Lymph nodes are named for their location and the areas they collect lymphatic fluid from. Lymph nodes most easily found by vets and owners are: Submandibular – under the lower jaw and upper neck.

Discover how allergies can cause swollen lymph nodes, and learn to distinguish between normal immune responses and warning signs that require medical attention.

Lymph nodes are usually small, but they can swell as part of the immune response. If lymph nodes around the neck and jaw swell, it may feel like a lump under the chin.

Swollen glands in the neck are swollen lymph nodes and often mean your body is fighting an infection. Causes include viruses, bacteria, autoimmune disorders, and more.

Lymph naturally builds up in the body’s tissues and then travels through an intricate network of vessels into lymph nodes, which act as a filtration system before the fluid returns to the ...

Symptoms When allergies cause swollen lymph nodes, you'll typically notice a pea-sized (1-2 centimeter) tender lump under your skin, usually in your neck, behind your ears, or under your jaw or ...

Experts explain whether or not allergies could be causing swollen lymph nodes in your neck or under your jaw, and when to see a doctor about enlarged glands.